StyloPAY Interview Questions and Answers

Q1. Personal questions they asked?
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Q2. Package details asking in previous process
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Logical reasoning, grammar, and coding: two basic level questions.

Q1. Question on core Java
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Q2. Question on SQL and PLSQL
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Q3. Resume based question and on project
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Q1. Resume and project based question
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Q2. What do you like about your current company, and why do you want to join our organization?
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Soo easy aptitude exam asked questions

Q1. What is oops in Java,fibo, and sorting
Ans. 
OOPs in Java refers to Object-Oriented Programming concepts, fibo likely refers to Fibonacci sequence, and sorting refers to arranging elements in a specific order.
• OOPs in Java includes concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• Fibo likely refers to the Fibonacci sequence, where each number is the sum of the two preceding ones (e.g. 0, 1, 1, 2, 3, 5, ...).

• Sorting involves arranging el...read more
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Q2. Why is garbage collector is used in java etc more of java questions
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Q3. Can main can be overloaded and overrided
Ans. 
Yes, main can be overloaded but not overridden in C++.
• Main can be overloaded by defining multiple functions with different parameters.

• Example: int main() and int main(int argc, char* argv[])

• Main cannot be overridden as it is a static function of the program.
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Q1. Merge two sorted linked lists
Ans. 
Merge two sorted linked lists into a single sorted linked list
• Create a new linked list to store the merged result

• Iterate through both input linked lists and compare nodes to determine the order in which they should be added to the result list

• Handle cases where one list is longer than the other
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Q2. Check if paranthesis are balanced or not
Ans. 
To check if parentheses are balanced, use a stack data structure to keep track of opening and closing parentheses.
• Use a stack to push opening parentheses and pop when encountering a closing parenthesis

• If stack is empty when encountering a closing parenthesis, return false

• After iterating through all parentheses, if stack is empty, return true
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Q1. Right view of a Binary Search tree
Ans. 
The right view of a Binary Search Tree shows the nodes that are visible when viewing the tree from the right side.
• The right view of a Binary Search Tree includes the rightmost node at each level.

• Nodes at each level that are not visible from the right side are not included in the right view.

• Example: For the Binary Search Tree with values 1, 2, 3, 4, 5, the right view would be 1, 3, 5.
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Q2. Few javascript questions on how to parse a json object without using inbuilt libraries.
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Q1. What features of playwright did you use in project
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Q2. How would you do api chaining
Ans. 
API chaining is the process of making multiple API calls in a sequence to achieve a desired outcome.
• Identify the APIs that need to be called in sequence

• Extract necessary data from the response of one API call to use in the next call

• Handle errors and exceptions that may occur during the chaining process

• Use tools like Postman, RestAssured, or programming languages like Python to automate the chaining process
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Q1. Write page object for login
Ans. 
Page object for login functionality
• Create a LoginPage class with methods for entering username, password, and clicking login button

• Use locators to identify the username input field, password input field, and login button

• Implement a method to perform the login action and return the next page object
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Q2. What is extension of eslint file and how do you combine rules in eslint
Ans. 
Eslint file extension is .eslintrc.js and rules can be combined using extends property
• Eslint file extension is .eslintrc.js

• Rules can be combined using the 'extends' property in the eslint configuration file

• For example, to combine rules from multiple eslint configurations, you can use: 'extends: ['eslint:recommended', 'plugin:react/recommended']
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Q3. Write a program on wellformed braces
Ans. 
Program to check if braces are well-formed
• Use a stack to keep track of opening braces

• Iterate through the input string and push opening braces onto the stack

• When a closing brace is encountered, pop from the stack and check if it matches the corresponding opening brace

• If stack is empty at the end and all braces are matched, return true
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Q1. How to maintain security in Microservices ?
Ans. 
Maintaining security in Microservices involves implementing authentication, authorization, encryption, and monitoring.
• Implement authentication and authorization mechanisms to control access to microservices.

• Use encryption to secure communication between microservices.

• Implement monitoring and logging to detect and respond to security incidents.

• Regularly update dependencies and patches to address security vulnerabilities...read more
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Q2. Difference between Kafka and RabbitMQ ?
Ans. 
Kafka is a distributed streaming platform while RabbitMQ is a message broker.
• Kafka is designed for high-throughput, fault-tolerant, real-time data streaming.

• RabbitMQ is a traditional message broker that follows the AMQP protocol.

• Kafka uses a publish-subscribe model while RabbitMQ uses a message queuing model.

• Kafka is horizontally scalable and provides strong durability guarantees.

• RabbitMQ supports multiple messaging pr...read more
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Q3. What are the usecases where CQRS pattern can be used ?
Ans. 
CQRS pattern can be used in scenarios where read and write operations need to be separated for better scalability and performance.
• CQRS can be used in applications with complex domain models that require different models for reading and writing data.

• It can be beneficial in scenarios where read operations heavily outnumber write operations.

• CQRS is useful when there is a need to optimize read and write operations independ...read more
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Q4. How will you resolve eventual consistency in a relational DB from design perspective ?
Ans. 
Implementing eventual consistency in a relational DB involves careful design and use of techniques like conflict resolution and versioning.
• Use timestamp-based conflict resolution to handle conflicting updates.

• Implement versioning to track changes and resolve conflicts.

• Consider using distributed transactions or distributed consensus algorithms like Paxos or Raft.

• Use compensating transactions to rollback changes in case ...read more
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Q5. Tell me any challenging production issue you faced and how you resolved it ?
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Q1. Knn algorithm using python
Ans. 
KNN algorithm is a simple and effective machine learning algorithm for classification and regression tasks.
• KNN stands for K-Nearest Neighbors.

• It is a non-parametric, lazy learning algorithm.

• Works by finding the K closest training examples in feature space to a given input data point.

• Classification: Assign the most common class among the K nearest neighbors.

• Regression: Take the average of the K nearest neighbors' target...read more
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Q2. Some LC problem on suffix and prefix
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Q1. Case study on imbalanced dataset
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Q2. Evaluation metrics
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Q1. HR will call you and ask your current roles and responsibilities ?
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Q2. Job designation senior system engineer (IAM, Azure portal, SaaS Applications, API integrations, Vulnerability Management)
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Q1. Do you anything related vulnerability management?
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Q2. How do you support application for sso enablement?
Ans. 
Supporting application for SSO enablement involves configuring authentication settings, integrating with identity providers, and testing functionality.
• Configure authentication settings within the application to enable SSO

• Integrate the application with identity providers such as Okta, Azure AD, or PingFederate

• Test the SSO functionality to ensure seamless user experience

• Provide documentation and training for users on how
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Q3. Haw you handle outages and any regular task you performed?
Ans. 
I handle outages by following established procedures and prioritize tasks based on impact.
• Immediately assess the situation to determine the root cause of the outage

• Communicate with stakeholders to keep them informed of the issue and expected resolution time

• Work with cross-functional teams to troubleshoot and resolve the outage as quickly as possible

• Document the outage incident and steps taken for future reference and i...read more
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Q4. How you deal with change management?
Ans. 
I handle change management by implementing structured processes, communication, and stakeholder involvement.
• Implementing a change management process to track and document changes

• Communicating changes effectively to all stakeholders

• Involving key stakeholders in decision-making and planning

• Ensuring proper testing and validation of changes before implementation
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Q5. How do you enable sso for applications for saas?
Ans. 
Enable SSO for SaaS applications by integrating with identity providers and configuring authentication protocols.
• Integrate with identity providers such as Okta, Azure AD, or Google Workspace

• Configure authentication protocols like SAML, OAuth, or OpenID Connect

• Implement single sign-on functionality in the application code

• Ensure secure communication between the application and the identity provider
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Q6. What is RTO in disaster recovery?
Ans. 
RTO stands for Recovery Time Objective in disaster recovery, representing the targeted duration of time within which a business process must be restored after a disaster.
• RTO is a crucial metric in disaster recovery planning, indicating the maximum acceptable downtime for a system or process.

• It helps organizations determine the resources and strategies needed to recover from a disaster within a specific timeframe.

• For ex...read more
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Q7. Which application you are using to connect servers?
Ans. 
I primarily use SSH (Secure Shell) to connect servers.
• SSH (Secure Shell) is a widely used application for securely connecting to servers

• Other applications like PuTTY, OpenSSH, and WinSCP can also be used for server connections
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Q1. Hiring manager will brief about jd and ask questions based on related job and you are working
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Q2. Do you vulnerability management?
Ans. 
Yes, I am experienced in vulnerability management.
• I have experience in identifying, prioritizing, and mitigating vulnerabilities in systems and networks.

• I am proficient in using vulnerability scanning tools such as Nessus, Qualys, and OpenVAS.

• I have implemented patch management processes to address vulnerabilities in a timely manner.

• I have conducted vulnerability assessments and penetration testing to identify weakness...read more
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Q3. You worked applications were connected or disconnected one?
Ans. 
I have experience working with both connected and disconnected applications.
• I have experience developing applications that can function both online and offline.

• I have worked on projects where data synchronization is crucial for seamless user experience.

• Examples include mobile apps that can work offline and sync data when connected to the internet.
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Q4. Have you taken care of Authorization part?
Ans. 
Yes, I have experience in taking care of the Authorization part in various projects.
• Implemented role-based access control (RBAC) to manage user permissions

• Configured and managed authentication protocols such as OAuth and SAML

• Worked on setting up access control lists (ACLs) for network security

• Experience with managing user roles and permissions in Active Directory

• Utilized single sign-on (SSO) solutions for seamless user
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